Improvement in photographic monocular glasses



AV. L'DALLEM'AGNE a LyrlsnuLn. Photographic Monocular la'sefs'.

No. 146,052. `Patented nec. smi-873.;

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UNITED STATES PMEEr-'rN OFFICE;

AUGUSTE J. ]).\LLl ll\lAGNE AND LOUIS TRIBOULET, OF PARIFRANUE.

IMPROVEMENT IN PHOTOGRAPHIC MONCCULAR GLASSES.

Specification forming part of Letters Patent No 146,052, dated Dezember 20, ISTS; application filed July 1G, 1873.

.der a handsome collection ot' photographs less costly, and the classification of each proof, as regards dimensions, less inconvenient than is now the ease.

Figure lis a front elevation of aor plate carrying a series ot' photographie proofs according to our invention. Fig. 2 is a side View ot" the mechanical arrangement by which the photographs are set in motion, and Fig. l is a'section of Fig. 2.

`Around the circumference of the glass or plate shown in Fig. l is a series of photographie proofs reduced to their smallest di mensions short of being of the kind known as microscopie A considerable number oi proofs are thus set in a circular line upon this glass, which is placed in a easing and a rotary motion given to it, so as to cause each ol' the proofs to pass successively beneath a magni- .iying glass or lens. The means oi' obtaining this series oll pictures present no novelty; it is simply by reduction..

In order that in the rotation of the glass each of the proofs ma y come facing the mag nitying-lens, a stop must be set according to the position of each ol' the proofs, to arrest the rotation of the glass at each proof. This is eiieeted in the arrangement shown by the wheel. A' (the number.l of.' teeth upon which is regulated by the number of proofs) and the spring B' iixed to the casing. is in connection with the glass by a double plate, G, pierced with two holes, communicating with two others pierced in the glass, and through which pass two screws. Thus, il' aretary motion be given to the knob l), the glu-ss carrying the photographs,the plate C, andthe toothed Wheel A' will follow this impulsion until it is no longer given, when the spring B', which has been made to yield, will stop the rotary motion by gearing into one ot` the teeth ol' the wheel A'.

Our invention is susceptible ot' many variations, and might be arranged to give stereoscopic effects by rendering it binocular.

The glass above described may be-ot' clear, or ot' unpolished or ground, glass, and niight be replaced by an opaque body, upon which proofs would be placed to be lit up by the rellection ot' a glass or otherwise.

Trans )arent roofs ininht even be cm )loved fastened upon a carte out out for this purpose,

or the carte itself might be of' a transparent nuiterial, such as mica or other similar body.

fe claim as our invention- The ease B, provided with an opening from The wheel A' l 

